Home / 72,900.36-109,164.60-58,130.82

Finding the Fourth Proportional to 72,900.36, 109,164.60 and 58,130.82

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Solution

The fourth proportional to 72,900.36, 109,164.60 and 58,130.82 is: 87,047.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,900.36 : 109,164.60 = 58,130.82 : x
  2. Step 2: Convert to fraction form
    72,900.36/109,164.60 = 58,130.82/x
  3. Step 3: Cross multiply
    72,900.36x = 109,164.60 × 58,130.82
  4. Step 4: Simplify right side
    72,900.36x = 6,345,827,712.97
  5. Step 5: Solve for x
    x = 6,345,827,712.97/72,900.36
  6. Step 6: Final answer
    x = 87,047.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.